- AsifSound vs. Spelling - American Dictionary
- Spelling glossary indexed by its abstract grouping pronunciation (=Asifsound). AsifSound consists of 12 sound symbols. This is made from CMU Pronouncing Dictionary.
- Roger's Reference - A Complete Homonym and Homophone Dictionary
- Dictionary of words that are phonetically identical but which have different meanings. Now includes over 5000 homonyms and homophones, with meanings and cross-references.